Up to now, all the projects listed in the Taihu Basin Integ rated Plan have been completed, which broughtin 9.2×10⁹ Yuan benefit during the 1999 flood season, equivalent to the total amountof investment for all the projects.The gains of the Taihu Plan lie in its extensive consideration on 1)f lood control benefits, 2)coordination and balance of local governmentinterests, as well as on 3)water supply, navig ation and environmentalimprovement.Nevertheless, the plan fell shortin insuf ficient demonstration of engineering parameters and incomplete satisfaction for all the local requirement s-some of them are too exacting-which need further improvement and amendments to the plan.